Relativistic Exploration of Dark Matter Effects in Rotating Galaxy, Studied Fluid-Dynamically
dark-matter-effect – space-cloud – fluid-gauge-field – gravity – relativistic-fluiddynamics
Abstract
Galactic space is filled with interstellar clouds of neutral gases. Motion of the spaceclouds is viewed as a flow of continuous fluid in curved space with gravity. Dynamical motions of the space-fluid of rotating galaxies are investigated by extending Fluid Dynamics to that in the frame of general relativity. Fluid flow field to be extended to that of a relativistic theory is reinforced by the fluid gauge theory equipped with a background (dark) gauge field conditioning the fluid continuity. The Gravity-space Fluid Dynamics thus developed captures main feature of the dark-matter effect as the action of the gauge field on the motion of space fluids. In the present formulation, the stress-energy tensor in the general relativity is revised in order to take account of general nature of stress field by extending the isotropic pressure to an-isotropic stress field.
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2023-12-09
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